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ASTM C1069-86(1997)e1

(Test Method)

Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption

Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption

SCOPE
1.1 This test method covers the determination of the specific surface area of aluminas and silicas used in the manufacture of ceramics. The test method is a general one permitting the use of any modern commercial nitrogen adsorption apparatus but strictly defining the outgassing procedure. Calculations are based on the Brunauer-Emmett-Teller (BET) equation.
1.2 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Dec-1996
ICS
81.060.10 - Raw materials
Technical Committee
C21 - Ceramic Whitewares and Related Products
Drafting Committee
C21.04 - Raw Materials
Current Stage
Ref Project

Relations

Replaced By
ASTM C1069-86(2004)e1 - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
Effective Date
01-Apr-2004
Referred By
ASTM F1538-03(2017) - Standard Specification for Glass and Glass Ceramic Biomaterials for Implantation
Effective Date
01-Jan-1997
Referred By
ASTM C1866/C1866M-22 - Standard Specification for Ground-Glass Pozzolan for Use in Concrete
Effective Date
01-Jan-1997
Referred By
ASTM F561-19 - Standard Practice for Retrieval and Analysis of Medical Devices, and Associated Tissues and Fluids
Effective Date
01-Jan-1997
Referred By
ASTM C1240-20 - Standard Specification for Silica Fume Used in Cementitious Mixtures
Effective Date
01-Jan-1997

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ASTM C1069-86(1997)e1 - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen AdsorptionASTM C1069-86(1997)e1 - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
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ASTM C1069-86(1997)e1 - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
e1
Designation: C 1069 – 86 (Reapproved 1997)
Standard Test Method for
Specific Surface Area of Alumina or Quartz by Nitrogen
Adsorption
This standard is issued under the fixed designation C 1069; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Section was added editorially in October 1997.
1. Scope 5. Apparatus
1.1 This test method covers the determination of the specific 5.1 Specific Surface Area Analyzer, recently (after 1970)
surface area of aluminas and silicas used in the manufacture of manufactured commercial equipment employing low-
ceramics. The test method is a general one permitting the use temperature (77 K) nitrogen adsorption. This test method may
of any modern commercial nitrogen adsorption apparatus but be dynamic or static.
strictly defining the outgassing procedure. Calculations are 5.2 Degassing Equipment, suitable to the instrument used.
based on the Brunauer-Emmett-Teller (BET) equation. 5.3 Analytical Balance, having a sensitivity of 1.0 mg.
1.2 This standard does not purport to address all of the
6. Reagents and Materials
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 6.1 Liquid Nitrogen.
6.2 Cylinder of compressed nitrogen gas, high purity as
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. specified by manufacturer, with pressure regulator.
6.3 Cylinder of compressed helium gas, high purity as
2. Referenced Documents
specified by manufacturer, with pressure regulator, for static
2.1 ASTM Standards: instruments or for dynamic instruments having gas mixing
E 173 Practice for Conducting Interlaboratory Studies of ability and employing the multipoint procedure or,
Methods for Chemical Analysis of Metals 6.4 Cylinder of compressed, approximately 0.30 mol frac-
tion, nitrogen in helium with pressure regulator, for other
3. Summary
dynamic instruments employing the single point procedure.
3.1 An appropriate size sample is degassed for1hat423 K
7. Procedure
before proceeding with the analysis as prescribed by the
manufacturer of the instrument used. The sample is accurately 7.1 Sample Preparation—Blend the gross sample very well.
weighed after analysis. For non-free-flowing materials mechanical agitation is neces-
3.2 Calculations are based on the BET equations, adapted sary (for example, V-type blender with intensifier). If sample
where necessary for the equipment being used. The cross- splitting of free-flowing materials is necessary, use a spinning
2 3
sectional area of the nitrogen molecule is taken as 0.162 nm . riffler.
7.2 Sample Degassing
4. Significance and Use
7.2.1 Sample size is related to the equipment being used and
4.1 Both sellers and purchasers of alumina and quartz will shall conform to the equipment manufacturer’s recommenda-
find the test method useful to determine the specific surface
tions for highest precision.
area and indirectly as a measure of the particle size for material 7.2.2 The degassing technique (for example, vacuum, no-
specifications, manufacturing control, and research and devel-
vacuum) shall conform to the equipment manufacturer’s rec-
opment. ommendations.
7.2.3 The degassing temperature shall be1hat423 K.
This test method is under the jur
...

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4.2 The test method is simple, although tedious, uses inexpensive equipment, and will provide a continuous curve with data obtained with standardized woven sieves.
SCOPE
1.1 This guide covers the determination of the particle size distribution of pulverized alumina and quartz for particle sizes from 45 to 5 μm by wet sieving.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 The only exception is in the Section 5, Apparatus, 5.1 where there is no relevant SI equivalent.  
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